EP1027525B1 - An apparatus for the removal of sand in an underwater well and use of a jet pump (ejector) in connection with such sand removal - Google Patents
An apparatus for the removal of sand in an underwater well and use of a jet pump (ejector) in connection with such sand removal Download PDFInfo
- Publication number
- EP1027525B1 EP1027525B1 EP98958409A EP98958409A EP1027525B1 EP 1027525 B1 EP1027525 B1 EP 1027525B1 EP 98958409 A EP98958409 A EP 98958409A EP 98958409 A EP98958409 A EP 98958409A EP 1027525 B1 EP1027525 B1 EP 1027525B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sand
- container
- pump
- outlet
- well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004576 sand Substances 0.000 title claims description 58
- 239000007788 liquid Substances 0.000 claims description 39
- 239000012530 fluid Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
Definitions
- the invention relates to an apparatus for the removal of sand, especially in the lower area of the well, in connection with the recovery of oil or gas, said apparatus comprising a displaceable sand-accommodating container having a closeable inlet for the sand's flowing into the container and an outlet for removing the sand from the container subsequent to the displacement thereof, at a suitable place.
- the invention concerns use of a jet pump (ejector) in connection with such sand removal.
- the amount of produced sand increases with increasing flow rate, and an important measure against sand production is, thus, to limit the flow rate.
- Measuring equipment has been developed in order to detect produced sand, so that sand-reducing measures may be carried out prior to the production equipment has been damaged to such a degree that it has to be repaired.
- a common way of removing sand is to circulate liquid within the well. Liquid pumped down towards the bottom through a pipe string, conveys sand to the surface upon return through the annulus between pipe string and well wall. It is known to add a gas, e.g. nitrogen, to the liquid in order to increase the effect, but it has been found to be difficult to remove sand satisfactorily in this manner.
- a gas e.g. nitrogen
- the well pressure which is substantially higher than the pressure within the container, causes an intense but brief flow of sandy liquid into the container.
- the inlet is closed and the sand conveyed up to the surface, kept within the container.
- US 4744420 discloses a jet pump connected to the distal end of a concentric tubing string which is insertable in a wellbore and extendable from the earth's surface or from a seal member providing a crossover flow path between the wellbore annulus above the seal member and the inner tubing member of the concentric tubing string.
- the jet pump includes a plurality of nozzles for ejecting evacuation of fluid into the wellbore to agitate and entrain accumulated solids for flow into a pump inlet cavity and to be propelled out of the pump by a portion of the evacuation fluid acting as a jet pump power fluid.
- the inner tubing member may be coilable tubing, which is inserted into the outer tubing member after the jet pump has been lowered into the wellbore.
- An upper portion of the concentric tubing string may be made up of preassembled sections of the inner and outer tubing members.
- One embodiment of the seal member is an inflatable packer utilizing evacuation fluid as the seal element inflation medium.
- US 5033545 shows a device that employs the jet pump principle to bring a power fluid to sedimented solids and the like plugging a conduit, and it includes at least one nozzle which directs the power fluid in a high-velocity jet against the solids to bring the solids into suspension for subsequent removal thereof using the jet pump principle.
- US 4 190 113 shows an apparatus as described in the preamble of claim 1.
- the object of the invention is to provide a simple and efficient apparatus for removing sand from a well.
- An apparatus comprises a container having two separate apertures.
- One aperture forms a separate inlet and is assigned a one-way valve so that sandy liquid can flow into the container but not return, out of the container.
- a filter to retain sand brought along with the flowing, circulating liquid within the container.
- sandy liquid may, thus, be brought to flow into the container at the inlet thereof, filtered liquid flowing out from the container at the outlet thereof and, therefrom, out into the well.
- the outlet is assigned the suction side of a pump, preferably a jet pump or ejector, driven by a liquid flow supplied thereto from another pump.
- the container is lowered into the well and is pulled up therefrom by means of a pipe string, e.g. a coilable tubing coupled to the jet pump. Supplying the jet pump with forced flowing liquid through the pipe string, causes an underpressure to be created within the container. Liquid within the well or liquid operating the jet pump in case the well is filled with gas, takes with it sand and flows into the container through the inlet.
- a pipe string e.g. a coilable tubing coupled to the jet pump.
- Supplying the jet pump with forced flowing liquid through the pipe string causes an underpressure to be created within the container.
- Liquid within the well or liquid operating the jet pump in case the well is filled with gas takes with it sand and flows into the container through the inlet.
- the filter prevents sand from accompanying liquid through the outlet and into the pump.
- the jet pump may, based on experience, be stopped after a predetermined time has lapsed, or upon the occurrence of a signal from a sensor discharging said signal when the container has reached an acceptable degree of filling.
- said one-way valve prevents sand from falling out through the inlet.
- reference numeral 1 denotes the lower part of a well wherewithin an apparatus 2 has been lowered in order to remove sand 3.
- the apparatus 2 is attached to a pipe string 4, e.g. in the form of a coilable tubing, adapted to conduct liquid to a jet pump (ejector) 5 assigned to a container 6 for the accommodation and removal of sand 3.
- a pipe string 4 e.g. in the form of a coilable tubing, adapted to conduct liquid to a jet pump (ejector) 5 assigned to a container 6 for the accommodation and removal of sand 3.
- the jet pump 5 comprises a housing 7. Uppermost within the pump housing 7, a nozzle 8 is disposed. Said nozzle 8 is adapted to create a jet of liquid and pass it with a high speed into one end of a channel 9 which, through one or more lateral gates 10, passes out of the housing 7.
- the cross-sectional area of the channel 9 increases with increasing spacing from the nozzle 8, the channel 9 being assigned at least one such gate 10 conducting liquid through the wall of the pump housing 7 and outwards into the well 1.
- the housing 7 is in connection with the container 6 through an outlet opening 11 in the container 6. At the lower end thereof, the container 6 is provided with an aperture 12 forming an inlet for sandy liquid.
- a flap 13 which is rotatably attached to the container 6 by means of a hinge 14, is adapted to act as a one-way valve, preventing liquid and sand from flowing out from the container 6 at the inlet 12.
- the housing 7 and the container 6 are filled with a liquid which normally will be the same liquid as the one within the well 1.
- liquid supplied to the pump 5 will gradually fill the lower part of the well 1, so that the container 6 and the housing 7 are filled with liquid.
- liquid flowing out from the nozzle 8 and into the channel 9 takes with it liquid within the housing 7. Liquid which is pumped out of the housing 7 in this manner, is substituted by liquid from the container 6.
- a filter 15 prevents sand 3 from being brought into the housing 7 by liquid flowing through the container 6.
- the container 6 is filled with sand 3, and pumping is terminated, the flap 13 then rotating downwards around the shaft (hinge) 14, taking closing position, thus closing the inlet 12.
- the pipe string 4 carrying the apparatus 2 is pulled out of the well 1, and the container 6 is discharged, leaving the sand 3 at a desired place (in surface position), whereafter the apparatus 2, possibly, is lowered into the well 1 once more.
- the filter may have the form of a three-dimensional, hollow cone- or pyramide-shaped body having a downwardly tapering shape, figure 2.
- the degree of filling achieved/desired may be based on time and based on experiences from various sand removing situations, the jet pump 5 being stopped after the expiration of a predetermined time.
- a sensor can be mounted, e.g. at a level corresponding to the desired top level of an amount of sand. The sensor is actuated, e.g. physically, through the growing sand layer, and is adapted to give a signal which is passed to the jet pump 5 and, possibly, also the one-way valve flap 13, in order to cause the jet pump 5 to stop and the flap 13 to pivot and close the container inlet 12.
- the jet pump 5 used to effect the suction of liquid admixed sand (drive liquid 16, often in a mixture with produced liquid) into the sand-accommodating and displaceable container 6 of the sand removing apparatus 2 of the invention, has be found to possess such a superior efficiency and reliability as the drive device of the apparatus 2 that such water-driven jet pumps 5 seem to hold a unique position in the present connection.
- the invention consists, besides the combination of constructive features of the sand removing apparatus, in a use of a jet pump (ejector) as a drive device for the apparatus.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Jet Pumps And Other Pumps (AREA)
Description
Claims (10)
- An apparatus (2) for the removal of sand in an underwater well (1) used in connection with oil or gas recovery, said apparatus (2) comprising a displaceable sand-accommodating container (6) having a separate closable inlet (12) for allowing a flow of sand into the container (6) together with a carrier fluid in the form of a liquid, a separate outlet (11) connected to the suction side of a pump (5), a filter (15) between the outlet (11) and the inlet (12), thus retaining sand within the container (6) but letting liquid there through, and an outlet for the discharge of sand after recovering the apparatus (2) from the well (1), characterized in that the pump (5) is a jet pump powered by carrier fluid flowing through a nozzle (8), into a channel (9) via the pump (5) suction area, then out of the pump (5) through a gate (10); and that the cannel (9) is closer to the container (6) than the nozzle (8),
- An apparatus (2) as set forth in claim 1, characterized in that said separate inlet (12) is provided with a one-way valve (13,14).
- An apparatus as set forth in claim 2, characterized in that the one-way valve (13,14) is a flap valve.
- An apparatus as set forth in claim 3, characterized in that the valve flap (13) which, substantially, has a rectangular circumferential shape, is pivotally disposed at one edge on an edge portion of the container (6) defining one side of a rectangular valve aperture (12) complementarily corresponding thereto.
- An apparatus as set forth in any one of claims 1 - 4,
characterized in that the separate inlet (12) and the separate outlet (11) are disposed in two opposite side walls, e.g. bottom and top wall as referred to the position of use, and that said filter (15) is disposed immediate adjacent the outlet (11), its circumference extending radially outside the circumference of the outlet (11) as well as being attached sand-tightly to the container wall in which the outlet (11) is disposed. - An apparatus as set forth in any one of the preceding claims, characterized in that the filter (15), in order to give it a large surface area in relation to the need of space thereof within the container (6), is shaped as a hollow cone- or pyramide-shaped body tapering in a direction away from the outlet (11).
- An apparatus as set forth in any one of the preceding claims, characterized in that the drive device of the apparatus (2) in the form of said pump (5) is assigned a timed equipment unit stopping the pump (5) and, thus, disrupting the circulation of liquid after a predetermined time has lapsed, corresponding to what empirically corresponds to a satisfactory degree of filling of the container (6).
- An apparatus as set forth in any one of claims 1 - 6,
characterized in that the container (6) is assigned a sensor adapted to react to a growing amount of sand within the container (6) in order to, upon the occurrence of an enclosed amount of sand corresponding to the desired degree of filling, generating a signal transferred to at least the pump (5) or the drive means (16) thereof, to stop the pump (5) and to put the apparatus (2) out of operation. - An apparatus (2) (according to any of the preceding claims, characterised in that) it is connectable to the free end of a pipe string, e.g. in the form of a coilable tubing (4).
- An apparatus (2) (according to any of the preceding claims, characterised in that) the pressure side of the jet pump (5) is in liquid communication with the surroundings in a well (1) through one or more lateral gates (10) through the wall of the housing (7) of the jet pump (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK98958409T DK1027525T3 (en) | 1997-10-27 | 1998-10-14 | Apparatus for removing sand in an underwater fire and using a jet pump (ejector pump) in connection with such sand removal |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO974950A NO306027B1 (en) | 1997-10-27 | 1997-10-27 | Apparatus for removing sand in an underwater well |
NO974950 | 1997-10-27 | ||
PCT/NO1998/000310 WO1999022116A1 (en) | 1997-10-27 | 1998-10-14 | An apparatus for the removal of sand in an underwater well and use of a jet pump (ejector) in connection with such sand removal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1027525A1 EP1027525A1 (en) | 2000-08-16 |
EP1027525B1 true EP1027525B1 (en) | 2005-05-25 |
Family
ID=19901257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98958409A Expired - Lifetime EP1027525B1 (en) | 1997-10-27 | 1998-10-14 | An apparatus for the removal of sand in an underwater well and use of a jet pump (ejector) in connection with such sand removal |
Country Status (8)
Country | Link |
---|---|
US (1) | US6158512A (en) |
EP (1) | EP1027525B1 (en) |
AU (1) | AU727949B2 (en) |
BR (1) | BR9815222A (en) |
CA (1) | CA2307227C (en) |
DE (1) | DE69830328T2 (en) |
NO (1) | NO306027B1 (en) |
WO (1) | WO1999022116A1 (en) |
Families Citing this family (35)
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US6167960B1 (en) * | 1998-08-17 | 2001-01-02 | Emmanuel G. Moya | Protection of downwell pumps from sand entrained in pumped fluids |
FI116643B (en) | 1999-11-15 | 2006-01-13 | Nokia Corp | Noise reduction |
US6427776B1 (en) * | 2000-03-27 | 2002-08-06 | Weatherford/Lamb, Inc. | Sand removal and device retrieval tool |
US6672335B1 (en) * | 2001-09-10 | 2004-01-06 | Kyle N. Welborn | Automated dump sand separator control system |
US6719050B2 (en) * | 2002-02-06 | 2004-04-13 | Kenneth E. Longacre | Method and apparatus for removing solid material from a well using a rotary pump |
US20030189016A1 (en) * | 2002-04-04 | 2003-10-09 | Tucker Randall L. | Sediment collector with hopper assembly |
WO2003099093A1 (en) * | 2002-05-23 | 2003-12-04 | Tucker Randall L | Sand wand assembly |
US6983852B2 (en) * | 2002-10-10 | 2006-01-10 | Specialized Tech Inc. | Desanding apparatus and system |
US7080686B2 (en) * | 2002-11-13 | 2006-07-25 | David Beckhardt | Devices and methods for extraction, transportation and/or release of material |
CN104088622A (en) * | 2003-02-14 | 2014-10-08 | 贝克休斯公司 | Systems and operation methods for sensing downhole conditions during non-drilling well operations |
GB2409713B (en) * | 2004-01-02 | 2006-11-22 | Brian Kings | Mini drain cleaner |
DE112007000947B4 (en) * | 2006-04-17 | 2016-07-28 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Active material actuated headrest, method for selectively reconfiguring a shape or module characteristic of a headrest and headrest assembly |
US7472745B2 (en) * | 2006-05-25 | 2009-01-06 | Baker Hughes Incorporated | Well cleanup tool with real time condition feedback to the surface |
AU2008221112B2 (en) * | 2007-02-28 | 2013-03-28 | Welltec A/S | Drilling tool with fluid cleaner |
NO330997B1 (en) * | 2008-02-28 | 2011-09-05 | Innovar Engineering As | Device by cleaning tool |
CN102828713B (en) * | 2011-06-14 | 2015-11-25 | 深圳市工勘岩土技术股份有限公司 | Drag for slag cylinder |
US8844631B2 (en) * | 2011-11-30 | 2014-09-30 | Baker Hughes Incorporated | Debris removal system for downhole closure mechanism, and method thereof |
US9938812B2 (en) | 2012-02-13 | 2018-04-10 | Specialized Desanders Inc. | Desanding apparatus and a method of using same |
US9909405B2 (en) | 2012-02-13 | 2018-03-06 | Specialized Desanders Inc. | Desanding apparatus and a method of using same |
US9327214B2 (en) | 2012-02-13 | 2016-05-03 | Specialized Desanders Inc. | Desanding apparatus and a method of using same |
NO335083B1 (en) * | 2012-08-21 | 2014-09-08 | Altus Intervention As | Apparatus for collecting particulate matter in a conduit |
MX366135B (en) | 2013-07-31 | 2019-06-28 | Halliburton Energy Services Inc | Mainbore clean out tool. |
CA2836437A1 (en) | 2013-12-16 | 2015-06-16 | Specialized Desanders Inc. | An desanding apparatus and a method of using the same |
US10352147B2 (en) * | 2015-11-18 | 2019-07-16 | Baker Hughes, A Ge Company, Llc | Horizontal extended reach borehole cleanup tool |
CN106121590B (en) * | 2016-06-28 | 2018-05-01 | 中国石油集团长城钻探工程有限公司 | Radial level drilling windowing filter back flush apparatus |
US11236566B2 (en) | 2016-11-11 | 2022-02-01 | Altus Intervention (Technologies) As | Downhole debris collecting device with a filter |
US10233607B2 (en) * | 2017-02-12 | 2019-03-19 | Bahman Niroumand | Comprehensive excavation process |
CN107420054B (en) * | 2017-07-19 | 2023-06-30 | 中国石油天然气股份有限公司 | Oil well sand washing pipe column, use method thereof and oil well sand washing system |
US11173427B2 (en) | 2017-09-25 | 2021-11-16 | Sand Separation Technologies Inc. | Device for separating solids from a fluid stream |
US10677005B2 (en) * | 2017-11-20 | 2020-06-09 | Baker Hughes, A Ge Company, Llc | Reverse circulation debris removal tool with well control feature |
WO2020047649A1 (en) | 2018-09-06 | 2020-03-12 | 1460798 Alberta Ltd. | Counterflow vortex breaker |
US11154796B2 (en) | 2018-11-16 | 2021-10-26 | Infinite Automated Solutions Llc | Apparatus, systems, and methods for automated separation of sand from a wellbore slurry |
CN114151035B (en) * | 2021-12-06 | 2023-02-28 | 山东省国土空间生态修复中心 | Vacuum negative pressure well washing equipment and use method thereof |
WO2023183577A1 (en) * | 2022-03-25 | 2023-09-28 | Schlumberger Technology Corporation | Method and system for simultaneous wireline milling and debris collection |
CN115030672B (en) * | 2022-06-15 | 2024-06-14 | 中国煤炭地质总局水文地质局 | Rock debris collecting device in well |
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US1466773A (en) * | 1921-07-13 | 1923-09-04 | Trew George Bornette | Silt trap |
DE523514C (en) * | 1928-11-13 | 1931-04-24 | Walter Brechtel | Method for driving boreholes using a gravel pump |
US2700567A (en) * | 1953-08-20 | 1955-01-25 | William W Fortenberry | Magnetic improvement for jet junk baskets |
US2909225A (en) * | 1956-06-01 | 1959-10-20 | Aerojet General Co | Jet type bailer with gas generating mechanism |
US3572431A (en) * | 1969-09-08 | 1971-03-23 | Donald P Hammon | Fluid circulating and retrieving apparatus for oil wells |
US4190113A (en) * | 1978-07-27 | 1980-02-26 | Harrison Wayne O | Well cleanout tool |
US4603739A (en) * | 1983-01-20 | 1986-08-05 | Marathon Oil Company | Process for cleaning an oil field well bore hole using an internal casing wiper |
US4744420A (en) * | 1987-07-22 | 1988-05-17 | Atlantic Richfield Company | Wellbore cleanout apparatus and method |
CA1325969C (en) * | 1987-10-28 | 1994-01-11 | Tad A. Sudol | Conduit or well cleaning and pumping device and method of use thereof |
US5095976A (en) * | 1988-11-08 | 1992-03-17 | Appleton Billy D | Tubing sand pump |
FR2651451B1 (en) * | 1989-09-07 | 1991-10-31 | Inst Francais Du Petrole | APPARATUS AND INSTALLATION FOR CLEANING DRAINS, ESPECIALLY IN A WELL FOR OIL PRODUCTION. |
US5176208A (en) * | 1991-03-20 | 1993-01-05 | Ponder Fishing Tools, Inc. | Reverse circulation tool handling cuttings and debris |
US5318128A (en) * | 1992-12-09 | 1994-06-07 | Baker Hughes Incorporated | Method and apparatus for cleaning wellbore perforations |
DE19721823C2 (en) * | 1997-01-22 | 1999-01-14 | Bilfinger Berger Bau | Gravel pump |
-
1997
- 1997-10-27 NO NO974950A patent/NO306027B1/en not_active IP Right Cessation
-
1998
- 1998-05-13 US US09/078,297 patent/US6158512A/en not_active Expired - Fee Related
- 1998-10-14 BR BR9815222-0A patent/BR9815222A/en not_active IP Right Cessation
- 1998-10-14 EP EP98958409A patent/EP1027525B1/en not_active Expired - Lifetime
- 1998-10-14 CA CA002307227A patent/CA2307227C/en not_active Expired - Fee Related
- 1998-10-14 DE DE69830328T patent/DE69830328T2/en not_active Expired - Lifetime
- 1998-10-14 WO PCT/NO1998/000310 patent/WO1999022116A1/en active IP Right Grant
- 1998-10-14 AU AU14467/99A patent/AU727949B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
NO974950L (en) | 1999-04-28 |
NO306027B1 (en) | 1999-09-06 |
CA2307227C (en) | 2006-11-14 |
US6158512A (en) | 2000-12-12 |
NO974950D0 (en) | 1997-10-27 |
DE69830328D1 (en) | 2005-06-30 |
DE69830328T2 (en) | 2006-02-02 |
BR9815222A (en) | 2000-10-24 |
WO1999022116A1 (en) | 1999-05-06 |
AU727949B2 (en) | 2001-01-04 |
CA2307227A1 (en) | 1999-05-06 |
AU1446799A (en) | 1999-05-17 |
EP1027525A1 (en) | 2000-08-16 |
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